Results 1 to 10 of about 2,611 (226)
Calculating the Inrush Current of Superconducting Transformers [PDF]
Energies, 2021 Under certain circumstances, after connecting a superconducting transformer to the power network, a high value current may flow through its windings. This current can exceed the critical value of the superconductor many times and cause the windings to ...
Grzegorz Komarzyniec
doaj +4 more sources
BLOCKING ALGORITHM FOR CURRENT PROTECTION DURING INRUSH MAGNETIZATION CURRENT [PDF]
Наука и техника, 2014 The paper presents blocking algorithm for current protection during inrush process. The algorithm is based on the evaluation of the ratio of the positive sequence second harmonic current to the negative sequence first harmonic current.
F. A. Romaniuk, M. S. Loman
doaj +3 more sources
Automatic J–A Model Parameter Tuning Algorithm for High Accuracy Inrush Current Simulation [PDF]
Energies, 2017 Inrush current simulation plays an important role in many tasks of the power system, such as power transformer protection. However, the accuracy of the inrush current simulation can hardly be ensured.
Xishan Wen, Jingzhuo Zhang, Hailiang Lu
doaj +3 more sources
Calculation Of Magnetizing Inrush Current In Transformer [PDF]
, 2017 When transformer is energized its current reaches very high value generally approximately 10 to 20 times greater than its rated current. This paper deals with study of calculation of inrush current in transformer. Different methods are available to calculate inrush current in transformer.
SACHIN S. DADHE +2 more
openaire +3 more sources
Systematization of the Simulation Process of Transformer Inrush Current Using EMTP [PDF]
Applied Sciences, 2019 An inrush current is generated when a transformer is energized. This current has a large magnitude and rich harmonics, thereby causing mal-operation of the protection relay.
Hun-Chul Seo, Gi-Hyeon Gwon
doaj +2 more sources
Investigations into the transformer inrush current problem [PDF]
Nigerian Journal of Technology, 2018 A transformer being energised may draw a large transient current from the grid supply, resulting in a temporary voltage dip at the point of connection (POC) where customers are connected. The voltage dip is dependent upon the magnitude of the transformer inrush current.
Ekwue, A.O., Rawn, B
openaire +4 more sources
Inrush Current Control of High Power Density DC–DC Converter [PDF]
Energies, 2020 This paper presents a complete mathematical design of the main components of 2 kW, 54 direct current (DC)–DC converter stage, which can be used as the second stage of the two stages of alternating current (AC)–DC telecom power supply.
Ahmed H. Okilly +2 more
doaj +2 more sources
INVESTIGATION OF BLOCKING ALGORITHM FOR TRANSFORMER CURRENT PROTECTIONS IN MAGNETIZING INRUSH CURRENT MODES [PDF]
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2014 Presents investigations on blocking algorithm for transformer current protections during magnetizing inrush current. The investigations have shown that the algorithm has high sensitivity and reliably determines magnetizing inrush current modes.
A. N. Kuzovlev +2 more
doaj +2 more sources
AN ASPECT OF TRANSFORMER INRUSH CURRENT
Journal of Energy : Energija, 2022 Paper analyzes a sparking phenomena that were observed on power transformers during their first few energizing. Sparks occurred on the flange between tank cover and tank side, in spite of the fact that a jumper (copper link) was used. The phenomenon was observed on transformers from different manufacturers, with various transformer ratings, three or ...
Mikulecky, Antun +2 more
openaire +5 more sources
Damping the Inrush Current for Current Transformer [PDF]
Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020, 2020 The inrush current is a highly asymmetric transient magnetizing current resulting from saturation of the core of the transformer caused by excessive growth of magnetic flux in one direction only. The suggested strategy to damp the inrush current is adding an inductor in parallel with the circuit breaker (C.B., which has a very low resistance when it is
Yousif Alyounus +2 more
openaire +1 more source